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irqchip/atmel-aic: Fix unbalanced refcount in aic_common_rtc_irq_fixup()

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commit 277867ade8262583f4280cadbe90e0031a3706a7 upstream.

of_find_compatible_node() is calling of_node_put() on its first argument
thus leading to an unbalanced of_node_get/put() issue if the node has not
been retained before that.

Instead of passing the root node, pass NULL, which does exactly the same:
iterate over all DT nodes, starting from the root node.

Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Reported-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Fixes: 3d61467f9b ("irqchip: atmel-aic: Implement RTC irq fixup")
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Boris Brezillon 2017-07-04 11:10:40 +02:00 committed by Greg Kroah-Hartman
parent ed281a6aca
commit b27e9ff9a5
1 changed files with 2 additions and 2 deletions
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4
drivers/irqchip/irq-atmel-aic-common.c
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@ -148,9 +148,9 @@ void __init aic_common_rtc_irq_fixup(struct device_node *root)
struct device_node *np;
void __iomem *regs;
np = of_find_compatible_node(root, NULL, "atmel,at91rm9200-rtc");
np = of_find_compatible_node(NULL, NULL, "atmel,at91rm9200-rtc");
if (!np)
np = of_find_compatible_node(root, NULL,
np = of_find_compatible_node(NULL, NULL,
"atmel,at91sam9x5-rtc");
if (!np)